JP2005232927A - Door lock bolt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To install and use the same door lock droping bolt as it is even to a door different in the clearance height between the door and a floor surface. <P>SOLUTION: A lock bar 11 is composed of two bodies of a slide bar 19 vertically movably connected to an installation plate 10 and an engaging pin 20 connected in a shaft shape by fitting a base end part 20a to a connecting pipe part 19b of the slide bar. Screw inserting holes 25 and 26 are arranged in the shaft direction on the outer periphery of the connecting pipe part in the slide bar. A female screw hole 30 penetrating in the orthogonal direction to the base end part is arranged in its base end part in the engaging pin. The lock bar is constituted for adjusting the projecting length of the engaging pin to long and short two stages to the slide bar in response to a fitting height position, by adjusting the mutual fitting height position by selecting any of the two screw inserting holes communicating with the female screw hole in response to the clearance height between the door and the floor surface, when connecting the engaging pin to the slide bar. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is a door lock device that is used by being attached to a door that is less frequently opened and closed. The lock bar is lowered when the door is locked, and its lower end is engaged with a receiving hole installed on the floor surface side to engage the door. The present invention relates to a door lock drop that regulates opening and closing.

  Conventionally, in this type of door lock drop, as shown in FIG. 11, for example, for a hinged door 1, an elongated L-shaped attachment is used to attach to the corner near the lower edge of the mouth end surface 1 a. There is a plate provided with a plate 2 and a lock rod 3 connected to the mounting plate 2 so as to be movable up and down. The mounting plate 2 is provided with a shaft insertion hole 4 in a horizontal plate portion 2a having a short lower end in the drawing, and a guide convex surface 2c projecting to the side of the horizontal plate portion 2a with a part recessed at the upper end side of the vertical plate portion 2b. The guide convex surface 2c is provided with a vertically-long rectangular movement restriction hole 5. On the other hand, the lock rod 3 is formed in an integral shaft shape having a fixed length by an elongated support plate portion 3a and an engagement shaft portion 3b on the lower end side in the drawing. Reference numeral 6 in the figure denotes an operation knob piece fixed to the support plate portion 3 a of the lock bar 3, which is engaged with the movement restricting hole 5 to connect the lock bar 3 to the mounting plate 2. Reference numeral 7 in the drawing is an urging spring, and the lock plate 3 is moved to the unlocking height position and the lock height position in the movement restricting hole 5 in a state where the support plate portion 3a is pressed against the guide convex surface 2c by the spring urging force. It is attached to the mounting plate 10 so that it can move up and down. The door lock drop lock rod side is fitted into a mounting recess formed in the end face 1 a and the mounting plate 2 is screwed to the door 1.

  When the door 1 is locked using a conventional door lock drop, the operation knob 6 is picked, the lock rod 3 is lowered, and the engagement shaft portion 3b at the tip is moved to the floor 8 side through the shaft insertion hole 4. Engagement with the receiving hole 9a of the embedded lock bar receiver 9 restricts the opening and closing of the door 1.

  By the way, recently, health problems such as sick house syndrome have become a problem due to indoor air pollution caused by formaldehyde emitted from building materials and furniture of houses. Therefore, in recent houses and the like, the door 1 may be installed with a relatively large gap (dust) between the door 1 and the floor surface 8 in consideration of indoor ventilation.

  However, the conventional door lock drop is provided with a lock rod 3 of a certain length, so that it is directly attached to the door 1 with a large gap between the floor 8 as shown by the chain line in the figure. In this case, even if the lock bar 3 is lowered to the lock height position, the engagement shaft portion 3b does not reach the receiving hole 9a, so that it cannot be used very much. Therefore, in order to be able to be used by being attached to the door 1 having such a large gap between the floor surface 8 and the floor surface 8, it can be used correspondingly to the height h of the gap between the door 1 and the floor surface 8. There was a problem that there was no choice but to prepare various door lock drops with a dedicated lock rod.

  Therefore, an object of the present invention is to enable the same door lock drop to be used as it is for doors having different heights from the floor surface.

  In order to achieve the object of the invention described above, the invention described in claim 1 is, for example, as shown in the following embodiment, the lock rod 11 is attached to the mounting plate 10 fixed to the lower edge side of the door D, and the lower end thereof. When the lock bar 11 is lowered to the lock height position when the door is locked, the lower end of the lock bar 11 is moved to the floor surface side. In a door lock drop AA ′ that engages with a receiving hole 37a installed in the door to restrict the opening and closing of the door D, a slide bar 19 that connects the lock bar 11 to the mounting plate 10 so as to be movable up and down; An engagement pin 20 that connects a base end portion 20a to the lower end portion of the slide bar 19 with a concave-convex fit is formed into an axial shape, and the engagement pin 20 and the slide bar 19 include a door D and a floor surface. F gap height h1 · h Depending on, and characterized by being fastened adjustably protruding length of the engagement pin 20 relative to the slide bar 19 to adjust the height position mating with each other.

  The invention according to claim 2 is the door lock drop A according to claim 1, for example, as shown in the following embodiment, the lock bar 11 has a pipe-like lower end portion 19 b of the slide bar 19. A plurality of screw insertion holes 25 and 26 are provided in the outer periphery of the lower end portion in the axial direction, and a female screw hole 30 penetrating in a direction orthogonal to the base end portion 20a of the engagement pin 20 is provided. The base end portion 20a of the pin 20 is fitted to the lower end portion 19b of the slide bar 19 and connected in a shaft shape, and the engagement pin 20 and the slide bar 19 are formed between the door D and the floor surface F. According to the gap heights h1 and h2, the fitting height position where one of the female screw hole 30 and one of the screw insertion holes 25 and 26 communicates is adjusted, and the protruding length of the engaging pin 20 with respect to the slide bar 19 Can be adjusted in multiple stages Characterized by comprising screwed in its adjusted fitting height position.

  According to a third aspect of the present invention, in the door lock drop A ′ according to the first aspect, for example, as shown in the embodiment shown below, the lock bar 11 is connected to the lower end portion 19b of the slide bar 19 by a pipe. A female screw 19d is threaded on the inner peripheral surface of the lower end portion 19b, while a male screw 20d is threaded on the outer periphery of the base end portion of the engagement pin 20, and the base end portion 20b of the engagement pin 20 is formed. Are engaged with each other in the lower end portion 19b of the slide bar 19 so as to be connected in a shaft shape. The engagement pin 20 and the slide bar 19 have a clearance height h1 and h2 between the door D and the floor surface F. Accordingly, the screwing depth of the engaging pin 20 with respect to the slide bar 19 is adjusted to allow fine adjustment of the protruding length of the engaging pin 20 with respect to the slide bar 19, and the adjusted screwing depth. In the fitting height position according to And characterized by being sintered.

  According to the first aspect of the present invention, at the installation site, the protrusion length of the engagement pin is adjusted according to the gap height between the door and the floor surface, and the engagement pin is connected to the slide bar. By assembling the lock rod 11, the same door lock drop can be attached and used as it is for doors having different gap heights from the floor surface.

  According to the second aspect of the present invention, the protrusion length of the engagement pin can be adjusted in multiple stages by the number of screw insertion holes provided in the slide bar according to the height of the gap between the door and the floor surface. Thus, even for doors with different gap heights from the floor surface, it is possible to accurately handle the difference in gap height each time and use the same door lock drop as it is. it can.

  According to the third aspect of the present invention, the protruding length of the engaging pin is finely adjusted only by changing the screwing depth of the engaging pin with respect to the slide bar according to the gap height between the door and the floor surface. With this, even for doors with different gap heights from the floor surface, it can accurately handle subtle differences in gap heights and use the same door lock drop as it is. can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an exploded perspective view showing a door lock drop according to the present invention, and FIG. 2 is an assembled perspective view thereof. A reference symbol A in the drawing indicates a door lock drop which is an example of the present invention. The door lock drop A shown in FIG. 1 includes an elongated plate-like attachment plate 10, a lock rod 11 connected to the attachment plate 10, and a biasing spring 12 of an elongated plate spring. .

  For example, the mounting plate 10 is bent and formed in an L shape so that it can be used by being attached to a corner near the lower edge of the front end of a parent-child hinged door. And a guide convex surface 10c projecting partly on the upper end side of the vertical plate portion 10b and projecting to the horizontal plate portion 10a side. The guide convex surface 10c is provided with a vertically long rectangular movement restriction hole 15 that determines a stroke in which the lock rod 11 moves up and down.

  The lock bar 11 is assembled using a slide bar 19, an engagement pin 20 connected to the slide bar 19, and an operation knob 21. The slide bar 19 is formed integrally with an elongated plate-like support plate portion 19a and a connecting pipe portion 19b formed at the lower end portion in the drawing. The support plate portion 19a is provided with a small insertion hole 22 for the operation knob 21 near the upper end in the figure, and a convex latching step portion 19c having rounded upper and lower end edges is formed on one surface near the lower end. In consideration of gap heights h1 and h2 between a door D and a floor surface F, which will be described later, the connecting pipe portion 19b is provided with screw insertion holes 25 and 26 for two set screws 24 in the vertical direction. The engaging pin 20 uses a round bar, and the base end 20a on the upper side in the figure is formed into a one-step narrow diameter in accordance with the diameter of the connecting pipe part 19b in the slide bar 19, and the base end 20a has a protruding end. The female screw hole 30 is provided in the radial direction. The operation knob 21 includes a wide knob 21a, an engagement step 21b formed so as to be narrower by one step so as to be engageable with the movement restriction hole 15 of the mounting plate 10, and an insertion protrusion 21c at the tip. The convex portion 21 c is inserted into the small hole 22 and fixed to the slide bar 19.

  Therefore, when the lock pin 11 connects the engagement pin 20 to the slide bar 19, the base end portion 20a of the engagement pin 20 is fitted to the connection pipe portion 19b of the slide bar 19, and the screw insertion hole 25 · 26, the female screw hole 30 is communicated with the screw 26, the set screw 24 is screwed into the female screw hole 30 through the communicating screw insertion hole, and the engaging pin 20 is fastened to the slide bar 19, thereby assembling one shaft. It is done. Therefore, the lock rod 11 is connected to the female screw hole 30 in accordance with gap heights h1 and h2 between the door D and the floor surface F, which will be described later, when the engagement pin 20 is connected to the slide bar 19. Select either 25 or 26 and adjust the fitting height position of each other, and the length that the engagement pin 20 protrudes from the slide bar 19 is adjusted to two steps, short and long, according to the fitting height position. It has come to be.

  The biasing spring 12 is provided with an elongated rectangular relief hole 29 corresponding to the movement restricting hole 15 near the upper end in the figure, and a pressing plate portion 12a bent in an arc shape at the lower end. The escape holes 29 are provided with hooking claws 29a and 29a at the upper and lower hole edges in the drawing by partially bending them.

  The door lock drop A having the above-described components is configured such that the latching claws 29a and 29a of the escape hole 29 are hooked on the upper and lower hole edges of the movement restricting hole 15, and the urging spring 12 is pressed against the pressing plate. The portion 12a is mounted on the guide convex surface 10c of the mounting plate 10 with the convex surface side facing outward. Then, the lock bar 11 overlaps the urging spring 12 with the slide bar 19 to engage the engagement step portion 21 b of the operation knob 21 with the movement restricting hole 15, and the support plate portion 19 a with the spring of the urging spring 12. In a state in which the slide bar 19 is pressed against the guide convex surface 10cb with an urging force, the slide bar 19 can be moved up and down between the unlocking height position and the locking height position in the movement restricting hole 15, as shown in FIG. Attached and drooped.

  In the present invention, when the illustrated door lock drop A is attached to a door, the clearance between the door and the floor surface is confirmed at the installation site, and the engagement is determined according to the height of the clearance. The protruding length of the mating pin 20 is adjusted, the engaging pin 20 is connected to the slide bar 19, and the lock rod 11 is assembled. Therefore, in this case, as shown in FIG. 4A, when the clearance between the door D and the floor surface F is small, the engagement pin 20 reaches the insertion depth at which the female screw hole 30 communicates with the upper screw insertion hole 25. Is inserted into the connecting pipe portion 19b of the slide bar 19, and the lock rod 11 has a protruding length of the engaging pin 20 with respect to the slide bar 19 according to a slight gap height h1. Adjust it short. Then, the set screw 24 is screwed into the female screw hole 30 through the screw insertion hole 25 at the fitting height position, and the engagement pin 20 is fastened to the slide bar 19.

  Then, when using the door lock drop A shown in FIG. 5 attached to the main door 35 of the parent-child hinged door D as shown in FIG. 5, for example, the door lock drop A is fixed to the corner near the lower edge of the end face 35a. At that time, the lock rod 11 side of the door lock drop A is fitted into the mounting recess 36 installed on the end face 35a, and both ends of the mounting plate 10 are screwed.

  Therefore, when the door D is locked by the door lock drop A, the knob 21a of the operation knob 21 is picked, the lock rod 11 and the engagement step portion 21b are in contact with the lower hole edge of the movement restricting hole 15. 4B, the distal end shaft portion 20b of the engagement pin 20 is engaged with the receiving hole 37a of the lock rod receiver 37 embedded on the floor surface F side through the shaft insertion hole 14. As shown in FIG. Then, the main door 35 is locked and the opening and closing of the door D from the outside is restricted. When the lock rod 11 is at the illustrated lock height position, the pressing plate portion 12a of the biasing spring 12 is engaged with the lower end edge of the latching step portion 19c on the slide bar 19, and the lock rod 11 is pressed by the spring biasing force. Is positioned and held at the lock height position.

  Since it is necessary to open and close the door D, when the door D is unlocked, the lock rod 11 is locked so that the engagement step portion 21b of the operation knob 21 hits the upper edge of the movement restricting hole 15 on the contrary. As shown in FIG. 4A, the engagement pin 20 is separated from the receiving hole 37a of the lock bar receiver 37 by raising the release height position. At that time, the pressing plate portion 12a of the urging spring 12 is engaged with the upper end edge of the latching step portion 19c on the slide bar 19, and the lock rod 11 is positioned and held at the unlocking height position.

  On the other hand, when the gap between the door D and the floor surface F is confirmed at the installation site, as shown in FIG. 6A, if the gap height h2 is large, the door lock drop A is similarly removed. Before attaching to the main door 35, the protrusion length of the engagement pin 20 is adjusted according to the gap height h2, the engagement pin 20 is connected to the slide bar 19, and the lock rod 11 is assembled. At this time, the insertion of the engagement pin 20 is stopped at a shallow insertion depth where the female screw hole 30 communicates with the lower screw insertion hole 26, and the base end portion 20 a of the engagement pin 20 is connected to the connecting pipe of the slide bar 19. It fits into the part 19b, and the protrusion length of the engagement pin 20 with respect to the slide bar 19 is adjusted one step longer according to the gap height h2. At this fitting height position, the set screw 24 is then screwed into the female screw hole 30 through the screw insertion hole 26 and the engagement pin 20 is fastened to the slide bar 19.

  Then, after the same door lock drop A is attached to the main door 35 of the door D, when the door D is locked, the lock rod 11 is moved to the lock height at which the engagement step portion 21b hits the lower hole edge of the movement restricting hole 15. When lowered to the vertical position, as shown in FIG. 6 (B), the engagement pin 20 has its front end shaft portion 20b engaged with the receiving hole 37a of the lock bar receiver 37 to lock the main door 35, and The opening and closing of the door D can be regulated.

  The lock rod 11 provided in the illustrated door lock drop A has a configuration in which two screw insertion holes 25 and 26 are provided on the connecting pipe portion 19b of the slide bar 19 in the vertical direction in the axial direction. However, in the present invention, three or more screw insertion holes are provided, and the protrusion length of the engagement pin with respect to the slide bar can be finely adjusted by the number of screwing positions, and the gap height between the door D and the floor surface F can be adjusted. It is also possible to adopt a configuration that accurately corresponds to the difference.

  By the way, the door lock drop A adjusts the mutual fitting height position of the lock pin 11 according to the screwing height position of the engagement pin 20 with respect to the slide bar 19, and the engagement pin 20 protrudes. The length was adjusted. However, in the present invention, instead, the lock rod 11 is configured as shown in FIGS. 7 and 8 so that the protruding length of the engaging pin 20 with respect to the slide bar 19 can be finely adjusted. It is also possible to accurately correspond to the difference in the gap height. In the following other illustrated examples, the same reference numerals are given to the same components as those in the illustrated embodiment.

  In the door lock drop A ′ of the other example shown in the figure, the lock rod 11 has a female screw 19d threaded on the inner peripheral surface of the connecting pipe portion 19b of the slide bar 19 and a screw hole 41 of a set screw 40 provided on the outer periphery. It is configured. On the other hand, the engagement pin 20 is similarly formed by using a round bar. In particular, the upper base end portion 20a in the drawing is formed into a D-shaped cross section to form a flat screw abutting surface 20c on a part of the outer periphery. In addition, a male screw 20d is screwed on the remaining outer peripheral surface.

  Therefore, when the lock pin 11 connects the engagement pin 20 to the slide bar 19, the base end portion 20 a of the engagement pin 20 is screwed into the connection pipe portion 19 b of the slide bar 19, and the set screw 40 is inserted into the screw hole 41. And the engaging pin 20 is fastened to the slide bar 19 to assemble it into a single shaft. Therefore, when the lock pin 11 connects the engagement pin 20 to the slide bar 19, the lock pin 11 is screwed into the slide bar 19 according to the gap heights h1 and h2 between the door D and the floor surface F. When the depth position is adjusted, the fitting height position of each other is determined, and the length at which the engaging pin 20 protrudes from the slide bar 19 is finely adjusted according to the fitting height position. .

  Now, when the door lock drop A ′ is used by being attached to the door D in the same manner as described above, the gap height between the door D and the floor F is confirmed at the installation site, and then the height of the gap is increased. Accordingly, the protruding length of the engagement pin 20 is adjusted, the engagement pin 20 is connected to the slide bar 19, and the lock rod 11 is assembled.

  Therefore, in this case, as shown in FIG. 9A, when the gap is small between the door D and the floor surface F, the base end portion 20a of the engagement pin 20 is connected to the connecting pipe portion 19b of the slide bar 19. Then, the lock rod 11 is adjusted so that the protrusion length of the engagement pin 20 with respect to the slide bar 19 is short according to the slight gap height h1. Then, a set screw 41 is screwed into the screw hole 40 and pressed against the screw abutment surface 20 c at a fitting height position corresponding to the screwing depth, and the engaging pin 20 is fastened to the slide bar 19.

  Therefore, when the door D is locked by the door lock drop A ′, the knob 21a of the operation knob 21 is picked, and the locking step 11 is moved to the movement restricting hole 15 in the same manner as described above. 9B, the distal end shaft portion 20b of the engagement pin 20 is engaged with the receiving hole 37a of the lock rod receiver 37 through the shaft insertion hole 14, as shown in FIG. Then, the main door 35 is locked and the opening and closing of the door D from the outside is restricted.

  On the other hand, when the gap between the door D and the floor surface F is confirmed at the installation site, as shown in FIG. 10A, if the gap height h2 is large, the door lock drop A is similarly applied. Before attaching 'to the main door 35, the protrusion length of the engagement pin 20 is adjusted according to the gap height h2, the engagement pin 20 is connected to the slide bar 19, and the lock rod 11 is assembled. At this time, the screwing depth of the engaging pin 20 with respect to the connecting pipe portion 19b of the slide bar 19 is made shallower according to the gap height h2, and the protruding length of the engaging pin 20 with respect to the slide bar 19 is adjusted to be increased by one step. . Then, a set screw 41 is screwed into the screw hole 40 and pressed against the screw abutment surface 20 c at a fitting height position corresponding to the screwing depth, and the engaging pin 20 is fastened to the slide bar 19.

  Then, when the door D is locked after the same door lock drop A ′ is attached to the main door 35, the operation knob 21 is picked and the lock rod 11 is moved to the movement restricting hole 15 by the engagement step portion 21b. When the lock pin is lowered to the lock height position where it hits the lower hole edge, as shown in FIG. 10 (B), the engagement pin 20 engages with the receiving hole 37a of the lock rod holder 37 so that the front end shaft portion 20b engages with the main door. 35 can be locked to restrict the opening and closing of the door D from the outside.

  By the way, in the illustrated embodiment described above, the lock bar 11 is configured by fitting the base end portion 20a of the engagement pin 20 to the connection pipe portion 19b of the slide bar 19 and connecting them. The base end of the engagement pin is formed in the shape of a pipe while the bottom end of the engagement pin is formed in the shape of a pipe. You can also

  Further, in the above-described illustrated embodiment, the example in which the door lock drop A · A ′ is attached to the double door type door has been described, but the present invention is attached to various doors in addition to the single door type door. Of course, it can be applied.

It is a disassembled perspective view which shows the door lock drop which is an example of this invention. It is an assembly perspective view of the door lock drop. It is a perspective view which shows the drop for door locks before adjusting the length of a lock stick. The adjustment length of the lock bar when the clearance between the door and the floor is small, (A) is an explanation of the state when the lock bar is in the unlocking height position, and (B) is the lock height position. It is sectional drawing. It is a perspective view which shows the state which attached the door lock drop to the opening door type door. The adjustment length of the lock rod when the gap between the door and the floor is large, (A) is an explanatory cross-section showing the state when the lock rod is at the unlocked height position, and (B) is at the lock height position FIG. It is a longitudinal cross-sectional view which shows the door lock drop of the other example of this invention. It is a disassembled perspective view of the door lock drop. The adjustment length of the lock rod when the gap between the door and the floor is slight, (A) is a side view showing the state when the lock rod is at the unlocked height position, and (B) is at the lock height position. FIG. The adjustment length of the lock rod when the gap between the door and the floor is large, (A) is a side view showing the state when the lock rod is at the unlocked height position, and (B) is at the lock height position. It is. It is a longitudinal cross-sectional view which shows the conventional door lock drop.

Explanation of symbols

A / A 'Door lock drop D Door F Floor surface h1, h2 Clearance height 10 Mounting plate 11 Lock rod 12 Biasing spring 19 Slide bar 19b Connecting pipe portion 19d Female thread 20 Engaging pin 20a Proximal end of engaging pin 20d Male thread 24/40 of engaging pin Set screw 25/26 Screw insertion hole 30 Female thread hole

Claims (3)

Mount the lock rod on the mounting plate that is fixed to the lower edge of the door so that the lower end of the lock rod can be moved up and down at the unlocked height position and the locked height position. When lowering the lock bar, the lower end of the door lock engages with a receiving hole installed on the floor surface side to regulate the opening and closing of the door,
The lock bar is configured in a shaft shape with a slide bar that is connected to the mounting plate so as to be movable up and down, and an engagement pin that connects a base end portion to the lower end portion of the slide bar with an uneven fit,
The engagement pin and the slide bar can be adjusted to adjust the protrusion height of the engagement pin relative to the slide bar by adjusting the fitting height position according to the height of the gap between the door and the floor. Door lock drop, characterized by being fastened. The lock bar is formed in a pipe shape at the lower end portion of the slide bar, and a plurality of screw insertion holes are provided in the axial direction on the outer periphery of the lower end portion, while penetrating through the base end portion of the engagement pin in the direction orthogonal thereto. A female screw hole is provided, and the base end portion of the engagement pin is fitted to the lower end portion of the slide bar and connected in a shaft shape.
The engagement pin and the slide bar adjust the fitting height position at which one of the female screw hole and the screw insertion hole communicates with each other according to the clearance height between the door and the floor surface. The door lock drop according to claim 1, wherein the protruding length of the engaging pin can be adjusted in multiple stages, and is screwed at the adjusted fitting height position. The lock bar has a lower end portion of the slide bar formed in a pipe shape, and a female screw is threaded on the inner peripheral surface of the lower end portion, while a male screw is threaded on the outer periphery of the base end portion of the engagement pin. The base end portion of the engagement pin is screwed into the lower end portion of the slide bar and connected in a shaft shape.
The engagement pin and the slide bar adjust the screwing depth of the engagement pin with respect to the slide bar according to the clearance height between the door and the floor, and the protrusion of the engagement pin with respect to the slide bar. The door lock drop according to claim 1, characterized in that the length can be finely adjusted and fastened at a fitting height position corresponding to the adjusted screwing depth.

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